RU2562051C1 - Disposable diaper with velcro fasteners - Google Patents

Abstract

FIELD: medicine.

SUBSTANCE: present invention enables solving a problem of designing a disposable diaper with Velcro fasteners provided with a front insert fastener element creating no abdomen pressure sensation in the user. The present invention is based on the fact that there is a possibility to avoid user's abdomen contact with the front insert fastener element, and wearing comfort level increases if a segment, wherein the user's abdomen can contact the front insert fastener element, is slotted. In other words, the present invention refers to disposable diapers with Velcro fasteners, provided with ribbon fastening pulls and the front insert fastener element, and is characterised by the fact that a slot centre forming a bent towards the inside of the front insert fastener element, is configured at least towards an upper edge of the front insert fastener element, whereas a bent apex of the above centre is arranged in the centre of the front insert fastener element.

EFFECT: structural improvement.

3 cl, 10 dwg

Description

FIELD OF THE INVENTION

[0001]

The present invention relates to a disposable diaper. In particular, the present invention relates to a disposable diaper with Velcro fasteners, on which a tape fixing tongue, made on the rear, is fixed on the front for putting the diaper on the user's body.

BACKGROUND OF THE INVENTION

[0002]

Disposable diapers with Velcro fasteners are known, on which a tape fixing tab is attached to the rear, while the front has a front insert fastener. The tape fixing tongue and the front insert fastener element are mechanically connected to each other, for example, by means of a Velcro fastener having a hook material (inner element) and looped material (outer element). Thus, the disposable diaper can be worn on the wearer's body by fixing the tape fixing tab on the rear part to the front insert fastener element with which the front part of the diaper is provided.

[0003]

In accordance with the above description, the front insert fastener element performs an important function in fixing the disposable diaper on the Velcro fasteners on the user's body. Thus, it has been generally accepted that the front insert fastener is preferably as wide as possible on the outer surface of the front in order to ensure easy fastening of the tape fixing tab.

[0004]

In general, the well-known front insert fastener elements are formed into a quadrangular shape (see Patent Literature 1 and Patent Literature 2). For example, the well-known front insert fastener is made in the form of a rectangle longitudinally located in the right and left directions on the front of the disposable diaper. Thus, it is generally accepted practice to mass-produce the well-known quadrangular front insert fastener elements in view of the fact that the element of this shape can be relatively easily made on the production line of disposable diapers.

List of Sources Patent Literature

[0005]

Patent Literature 1: JP 2010-057713 A

Patent Literature 2. JP 2011-30604 A

SUMMARY OF THE INVENTION Technical Problem

[0006]

It should be noted that a large number of elderly people and children use disposable diapers, and in some cases when moving they have to lean forward when they are wearing disposable diapers. In particular, many older people lean forward while sitting when they are wearing a disposable diaper. When a person using a disposable diaper leans forward or is in a sitting position, the distance between the abdomen and the upper thighs is reduced, as a result of which the front of the disposable diaper is wrinkled and wrinkles appear on it.

[0007]

In this case, that is, when the front insertive fastener element, made in the form of a rectangle, is placed on the outer surface of the front part and has a maximum area in order to ensure simple fastening of the tape fixing tongue in a known manner, a situation arises in which the stomach is in contact with the upper the edge of the front insert fastener, thereby reducing the level of comfort when worn when the user tilts disposable diapers forward. In particular, the front insert fastener has a Velcro fastener on its entire surface for securing the tape fixing tab and is made of a relatively dense material, as a result of which, in some cases, direct contact of the front insert fastener with the skin of the abdomen can cause damage.

[0008]

Similarly, when the front insert fastener is in the form of a rectangle, the upper thighs touch the lower edge of the front insert fastener when the diaper user is tilted forward. As a result of this, there is a decrease not only in comfort when wearing a disposable diaper, but also in the formation of folds in areas in contact with the user's legs, in the lower edge of the front insert fastener element with different movements of the legs, and the front insert fastener element cannot perform its direct function, t .e. the function of attaching a tape fixing tab to it.

[0009]

In FIG. 10 illustrates an example of a known disposable diaper provided with a known front insert fastener. In FIG. 10 sections that may come in contact with the abdomen and upper sections of the user's thighs in the area of the front insertive fastener when tilted or in the sitting position of the user of the disposable diaper are circled.

Solution

[0010]

The inventors of the present invention conducted a thorough study of the means to solve the problems inherent in the known constructions described above. As a result of the study, they found that when making cuts on the sections of the front insertive fastener element in contact with the stomach and upper thighs, the abdomen and upper parts of the user's thighs do not come in contact with the front insertive fastener element, which improves the comfort level when wearing disposable diapers. In addition, the inventors of the present invention concluded that the problems of known structures can be solved taking into account the above research results, and created the present invention.

In particular, the present invention has the following essential features.

[0011]

The present invention relates to a disposable Velcro diaper having a tape fixing tab 10 and a front insert fastener member 20.

In accordance with the present invention, the disposable diaper includes a back portion 1 covering the lower back of the wearer when wearing the disposable diaper, a front portion 2 covering the wearer's stomach, and a crotch section 3 located between the back portion 1 and the front portion 2.

The tape fixing tabs 10 are attached to the rear part 1 so that the tape tabs extend from the right-side edge and the left-side edge of the rear part 1.

The front insert fastener element 20, designed for fastening on it a tape fixing tab 10, is located on the front part 2.

In this case, a variant is permitted in which the front insert fastener element 20 is divided into the central part 20a, the left part 20b, which is located on the left side of the central part, and the right part 20c, which is located on the right side of the central part. Taking into account the separation of the parts, the front insert fastener element 20 can be divided into three equal parts in the right and left directions: the central part 20a, the left part 20b and the right part 20c, or can be divided in any ratio, for example, 4: 3: 3 or 6: 2: 2 to the central part 20a, the left part 20b and the right part 20c.

The present invention is characterized in that the central portion of the cut-out 21, which forms a bend in the direction inward of the front insert fastener element 20, is formed on the side of the upper edge 201 of the front insert fastener element 20, and the apex of the bend 211 of said central portion of the cut-out 21 is located in the central portion 20 a of the front insert fastener 20.

[0012]

In accordance with the present invention, the central portion of the cutout 21 is formed in the center from the upper edge 201 of the front insert fastener 20, as described above. As described above, since the central portion of the cutout 21 is shaped like the abdomen of the user, contact of the abdomen with the upper edge of the front insert fastener element 20 is prevented even if the user leans forward or sits. Thus, in accordance with the present invention provides a higher compared with the known disposable diapers. In addition, in accordance with the present invention, the front insert fastener element 20 is made only in the required area, taking into account the function of the front insert fastener element 20, intended for fastening the tape fixing tab 10 on it, thereby ensuring the economical use of expensive material.

[0013]

According to the present invention, the upper end 202 of the front insert fastener 20 is located on the left side 20b or the right part 20c, and it is preferable that the distance between the straight line running in the right and left directions from the upper end 202 of the front insert fastener 20 and the straight the line going in the right and left directions from the upper part of the bend 211 of the central section of the cut, was 5 mm or more and 80 mm or less. The upper end 202 of the front insert fastener element 20 can be located either on the left side 20b or on the right side 20c, and the upper ends 202 of the front insert fastener element 20 can also be mainly made in two sections on the left part 20b and the right part 20c.

[0014]

When the bending width of the central portion of the cutout 21 is 5 mm or more, as in the construction described above, it is possible to eliminate a situation in which the front insert fastener element 20 exerts pressure on the stomach, thereby reducing the level of wearing comfort, even if the user is wearing a disposable diaper leans forward. When the bending width of the central portion of the cutout 21 is 80 mm or less, the function of the front insert fastener element 20 for securing on the front part 2 of the tape fixing tab 10 located on the rear part 1 is not violated.

[0015]

According to the present invention, it is preferable that the upper edge 201 of the front insert fastener 20 includes a curve connecting the tip of the bend 211 of the central portion of the cutout 21 and the upper ends 202 of the front insert fastener 20. In addition, in accordance with the present invention, the upper edge 201 of the front insert the fastener element 20 can be made in the form of a curve connecting the intersection point of the upper edge 201 and the left-side edge 205, the top of the bend 211 of the Central section cut and the intersection point of the upper edge 201 and right edge 206.

[0016]

When the apex of the bend 211 of the central portion of the cutout 21 is connected in a curve to the upper end 202 of the front insert fastener 20 in accordance with the above construction, the central portion of the cutout 21 conforms to the shape of the abdomen of the user. The result is a further increase in comfort when wearing a disposable diaper.

[0017]

According to the present invention, it is preferable that the curve connecting the apex of the bend 211 of the central portion of the cutout 21 and the upper ends 202 of the front insert fastener element 20 be S-shaped. It is also preferable that the S-curve has a shape in which it extends outward in the direction of the apex of bend 211 from the upper end 202, and then forms a bend inward towards the apex of bend 211.

[0018]

When the curve connecting the top of the bend 211 of the central portion of the cutout 21 and the upper ends 202 of the front insert fastener 20 is S-shaped in accordance with the above construction, the abdomen of the user corresponds to the S-shaped bend line. As a result of this, even if the abdomen of the user is in contact with the upper edge 201 of the front insert fastener element 20, a situation is avoided in which the user does not experience an unpleasant sensation of pressure on the abdomen. This ensures a further increase in comfort when wearing a disposable diaper.

[0019]

According to the present invention, it is preferable that the lower left cutout 22, which is formed by cutting the lower left corner of the front insert fastener 20, and the lower right cutout 23, which is formed by cutting the lower right corner of the front insert fastener 20, is formed on the lower side the edges 203 of the front insert fastener 20, and the apex of the bend 221 of the lower left cutout 22 was located on the left side 20b, and the apex of the bend 231 of the lower right cutout 23 was located in the right oh part 20s.

[0020]

When the cutouts (22 and 23) are made on the right and left corners of the lower edge 203 of the front insert fastener element 20 in accordance with the above construction, a range of movement around the upper thighs (the periphery of the femoral joints) can be sufficiently provided, even if the user leans forward or sits. As a result of this, the level of wearing comfort is further enhanced in comparison with the known disposable diapers.

[0021]

In addition, in accordance with the present invention, it is preferable that the lower end 204 of the front insert fastener 20 is located in the central part 20a, and that the distance between the straight line going to the right and left from the lower end 204 of the front insert fastener 20, and the straight line going to the right and left from the top of the bend 221 of the lower left cutout 22 or to the right and left from the top of the bend 231 of the lower right cutout 23 was 5 mm or more and 80 mm or less.

[0022]

When the bending width of the lower left cutout 22 and the bending width of the lower right cutout 23 is 5 mm or more in accordance with the above construction, it is possible to exclude a situation in which the upper portions of the thighs are in contact with the lower corners of the front insert fastener element 20, even if the user on which is worn disposable diaper, leans forward. When the bending width of the lower left cutout 22 and the bending width of the lower right cutout 23 is 80 mm or less, the function of the front insert fastener element 20 for securing on the front part 2 of the tape fixing tab 10 on the rear part 1 is not violated.

[0023]

According to the present invention, it is preferable that the lower edge 203 of the front insert fastener element 20 includes a curve connecting the top of the bend 221 of the lower left cut-out, the lower end 204 of the front insert fastener element 20 and the top of the bend 231 of the lower right cut-out. Further, in accordance with the present invention, the lower edge 203 of the front insert fastener element 20 may be formed by a curve connecting the intersection point of the lower edge 203 and left-side edge 205, the lower end 204 of the front insert fastener element 20 and the intersection of the lower edge 203 and right-side edge 206.

[0024]

When the top of the bend 221 of the lower left cut-out, the lower end 204 of the front insert fastener 20 and the top of the bend 231 of the lower right cut are connected in a curve according to the above construction, the lower edge 203 of the front insert fastener 20 can be bent so as to fit the shape of the legs or range of movement around the user's legs. As a result of this, the level of wearing comfort is further enhanced.

[0025]

Moreover, in accordance with the present invention, it is preferable that the curve forming the upper edge 201 of the front insertion fastener 20 and the curve forming the lower edge 203 of the front insertion fastener 20 have the same shape.

[0026]

In the production process of the front insert fastener, the cutting is performed in a position corresponding to the upper edge 201 and the lower edge 203 to form the front insert fastener element 20. Since the upper edge 201 and the lower edge 203 are made, which have the same curved shape, the front the insert fastener element 20 can be manufactured using the same cutting blade. As a result of this, the need to use a separate cutting tool (cutting blade) for manufacturing the upper edge 201 and the lower edge 203 of the front insert fastener element 20 is eliminated, and in addition, there is no need for a device for trimming the edges, and therefore, the acquisition cost of the machine is reduced.

[0027]

According to the present invention, the front insert fastener 20 has a left-side edge 205 connecting one end of the upper edge 201 and one end of the lower edge 203, and a right-side edge 206 connecting the other end of the upper edge 201 and the other end of the lower edge 203.

The upper end 202 of the front insert fastener 20 does not necessarily coincide with the intersection point of the upper edge 201 and each side edge 205, 206. In this case, it is preferable that the angle between each side edge 205, 206 and the tangential line of the upper edge 201 at the intersection with each the side edge 205, 206 was an obtuse angle.

[0028]

When the front insert fastener element 20 has the above construction, its upper edge 201 has a rounded shape at the upper end 202. This improves the texture of the upper end 202 of the front insert fastener element 20, which eliminates the situation in which the four corners of the front insert fastener element are in contact with user skin. As a result of this, the level of comfort when wearing a disposable diaper is further enhanced.

[0029]

On the other hand, in accordance with the present invention, the upper end 202 of the front insert fastener 20 may coincide with the intersection point of the upper edge 201 and each side edge 205, 206. In this case, it is preferable that the angle between each side edge 205, 206 and the tangential line the top edge 201 at the intersection with each side edge 205, 206 was an acute angle.

[0030]

When the front insert fastener element 20 has the above-described structure, the curve connecting its upper end 202 and the top of the bend 211 of the central portion of the cutout has a shape that bends more smoothly towards the top of the bend 221. As a result, a situation is avoided in which the user experiences an unpleasant sensation pressure on the stomach when the user's stomach is in contact with the upper edge 201 of the front insert fastener element 20. Thus, the comfort level is further enhanced when Search for a disposable diaper.

[0031]

In accordance with the present invention, the front insert fastener element 20 may be designed so that it is divided into a central part 20 a, a left part 20 b, and a right part 20 c.

[0032]

As described above, the front insert fastener element 20 may be made of a first element representing the central part 20a, a second element representing the left part 20b, and a third element representing the right part 20c. When the front insert fastener element 20 is made by combining three separately made elements, as described above, the front insert fastener element 20, in which the central portion of the cutout 21 is made, the lower left cutout 22 and the lower right cutout 23, can be easily made by attaching the first element representing the Central part 20A so that the specified part was offset lower compared to the second element and the third element on the front part 2.

[0033]

In another embodiment of the present invention, cuts can only be made at the lower edge 203 of the front insert fastener 20 without making cuts at the upper edge 201.

Thus, in accordance with another embodiment of the present invention, the lower left cutout 22 made by cutting the lower left corner of the front insertion fastener 20 and the lower right cutout 23 made by cutting the lower right corner of the front insertion fastener 20 can only be made on the side of the lower edge 203 of the front insert fastener 20, the apex of the bend 221 of the lower left cutout may be located on the left side 20b, and the apex of the bend 231 of the lower right The cutout may be located on the right side of the 20s.

The positive effects of the invention

[0034]

The present invention has the above-described specific object of the invention and thus the invention allows to create a disposable diaper with Velcro fasteners, which eliminates the contact of the abdomen or upper thighs of the user with the front insertive fastener element 20, which increases the level of comfort when worn.

Brief Description of the Drawings

[0035]

Fig 1 is a perspective view of an example of a disposable diaper with Velcro closures.

FIG. 2 is an exploded view illustrating an example of a disposable diaper with Velcro closures.

FIG. 3 (a) and 3 (b) are front insert fastener elements in accordance with an embodiment of the present invention.

FIG. 4 (a) to 4 (d) are front insert fastener elements in accordance with another embodiment of the present invention.

FIG. 5 (a) to 5 (d) are front insert fasteners in accordance with another embodiment of the present invention.

FIG. 6 (a) to 6 (d) are front insert fasteners in accordance with another embodiment of the present invention.

FIG. 7 (a) to 7 (c) are front insert fasteners in accordance with another embodiment of the present invention.

FIG. 8 shows front insert fasteners in accordance with a further embodiment of the present invention.

FIG. 9 is a view for describing a diagram of manufacturing steps of a front insert fastener.

FIG. 10 is an example of a known disposable Velcro diaper.

Description of Embodiments of the Present Invention

[0036]

Description of embodiments for implementing the present invention is given below with reference to the drawings. The present invention is not limited to the examples below, and includes embodiments duly modified by those skilled in the art, modified in an obvious scope, taking into account the following embodiments of the present invention.

[0037]

In the present description of the invention, the term "right and left direction" refers to the short distance direction of the developed disposable diaper illustrated in FIG. 2 (in the right and left directions in Fig. 2). The term “up and down direction” refers to the longitudinal direction of the developed disposable diaper illustrated in FIG. 2 (up and down direction in FIG. 2). "Direction left and right" and "up and down direction" intersect at right angles to each other.

In addition, in the present specification, “A to B” means A or more and B or less.

[0038]

1. The basic design of a disposable diaper

In FIG. 1 is a perspective view illustrating an example of a disposable diaper with Velcro fasteners, and the diaper is presented in a form in which the front part 2 is turned upward to demonstrate the front insert fastener element 20 fixed to the outer surface of the front part 2. FIG. 2 is a detailed view illustrating an example of a disposable diaper with Velcro fasteners, and a disposable diaper is shown on the surface side not in contact with the skin of the user (non-skin surface) when the user is using the diaper.

As illustrated in FIG. 1 and FIG. 2, the Velcro disposable diaper 100 of the present invention consists of a back portion 1 that covers the lower back of the wearer, a front portion 2 that covers the wearer's abdomen, and a crotch section 3 that is located in the crotch of the wearer.

[0039]

The side flaps extend left and right on the back 1 and front 2 of the disposable diaper 100 with Velcro closures. In addition, the tape fixing tab 10 is attached to the rear part 1 so that it protrudes from the side edge of each side valve. On the other hand, the front insert fastener element 20 for securing the tape fixing tabs 10 on it is located on the side not in contact with the skin of the surface of the front part 2. Due to this, the user is able to wear the disposable diaper 100 on the Velcro fasteners, securing the tape fixing tabs 10, attached to the rear part 1. on the front insert fastener element 20 located on the front part 2, in such a way that the back part 1 is located on the lower back of the user, Front part 2 is located on the user's abdomen.

[0040]

The crotch section 3 is located between the rear part 1 and the front part 2. Moisture-absorbing cushioning material 31 for absorbing and retaining liquid, such as urine, is placed starting from the rear part 1 to the front part 2, while most of it is placed on the specified section of the crotch 3. The specified moisture-absorbing cushioning material 31 is covered with a liquid-permeable upper sheet layer 32, starting from the side of the surface in contact with the skin of the user (surface in contact with the skin) and is impervious to liquid back sheet layer 33 on the opposite side of the diaper, i.e. from the surface that is not in contact with the skin. A liquid, such as urine, accordingly penetrates through the upper sheet layer 32, is absorbed and held in the moisture-absorbing cushioning material 31, and a liquid-impervious back sheet layer 33 prevents the fluid from flowing out.

[0041]

The side sheet layers 34 can also be located on both sides of the upper sheet layer 32. The side sheet layer 34 is preferably made of a material having high breathability, while being hydrophobic. Volumetric assemblies 35 can also be made so that one end of the lateral sheet layer 34 is fixed to the surface of the upper sheet layer 32, and the elastic material (elastic material for the volumetric assembly) 41 is located in a stretched state at the other end of the lateral sheet layer. When the elastic material 41 for volume assemblies is compressed, these volume assemblies 35 form a strut due to the compression force. Standing volumetric assemblies 35 function as an airtight barrier to prevent fluid from flowing from the sides of the upper sheet layer 32.

[0042]

The cover sheet 36 may be laminated on the outer surface of the back sheet layer 33 to enhance the back sheet layer 33 and improve texture. As the material for the manufacture of the cover sheet 36, for example, a non-woven material made of a thermoplastic polymer such as polyethylene, polypropylene or polyester, or a non-woven material obtained by wet canvas formation can be used.

[0043]

(2. All structural elements of a disposable diaper)

The following is a description of each structural element of a disposable diaper with Velcro closures in accordance with the present invention.

[0044]

2-1. Tape Locking Tab

The tape fixing tab 10 is an element having fastening means 11 for putting on a disposable diaper 100 on a user. The specified tape locking tab 10 forms a mounting mechanism in combination with the front insert fastener element 20 located on the front part 2. The tape fixing tab 10 is located so that it extends from the lateral edge of the side flap of the rear part 1 and is intended to be fixed on the front insert fastener element 20 located on the front of 2.

[0045]

Preferably, the tape fixing tab 10 is of sufficient length to allow it to reach the front insert fastener element 20 located on the front part 2, and its shape is not limited to the shape illustrated in the drawing. In FIG. 1 and FIG. 2 shows an example whereby two tape fixing tabs 10 are located on the right-side and left-side edges of the rear part 1. However, one of the tape fixing tabs 10 can be located on the right-side and left-side edges, or three or more tape lines can be provided. fixing reeds.

[0046]

The fastening means 11 are located near the end of each tape fixing tab 10. The fastening means 11 can provide fixation, for example, by using pressure sensitive adhesive or adhesive tape, or the fastening means can be a Velcro fastener that mechanically fastens the tabs on the front insertion fastener 20. As a fastening mechanism for securing the tape fixing tabs 10 on the front insert fastener 20 is extremely preferred spolzovat Velcro providing fixation through mechanical hook material compound (inner member) and the loop material (outer member). The Velcro fastener is made, for example, using a combination of hook material, namely a series of protrusions (in the form of hooks, mushroom-shaped pins or similar forms) and looped material, namely loop-shaped fibers located on the surface of the Velcro fastener. For example, the hook material can be used as fastening means 11 of the tape fixing tab 10, while the loop material can be made on the front insert fastener element 20. In the Velcro fastener, when the hook material contacts the surface of the loop material, the series of hook-shaped pins engage with the surface of the looped material. Thus, in the hook and loop fastener, the hook material and the loop material can be firmly connected to each other with the possibility of separation, and the hook and loop fastener is preferred due to its multiple use and high reliability of fixation.

[0047]

As the material for the manufacture of the base material of the tape fixing tab 10, woven material, non-woven material, other materials, paper or plastic film can be used. As the fabric material, for example, synthetic plastics, such as polyethylene, polypropylene, polyamide, polyester, polyvinyl chloride or polystyrene, can be used.

[0048]

2-2. Front insert fastener

The front insert fastener element 20 is an element for securing and holding the tape fixing tab 10 located on the rear part 1, on the front part 2. The front insert fastener element 20 is attached to the outer surface of the front part 2 (on the surface side not in contact with the skin) and forms a fixing mechanism in combination with a tape fixing tab 10. For example, when using adhesive tape as a fixing means 11 of a tape fixing tab 10, the front insert fastener element 20 may be made of plastic film with a smooth surface. On the other hand, when using the hook material of the Velcro fastener as the fastening means 11 of the tape fixing tab 10, the looped material of the Velcro fastener can be used as the front insert fastener 20.

[0049]

2-2-1. An example implementation of the front insert fastener

In FIG. 3 (a) and 3 (b) illustrate an embodiment of a front insert fastener used in accordance with the present invention. The shape of the front insert fastener is not limited to the shape illustrated in FIG. 3, but firstly, a description of the shape of the front insert fastener in accordance with the present invention is given with reference to a preferred embodiment of the invention. In FIG. Part 3 of the elements is indicated by “black circles” to describe the shape of the front insert fastener element, however, in fact, “black circles” are absent. In addition, in FIG. 3 (b) the dashed lines are shown, but the dashed lines are virtual, virtually non-existent lines.

[0050]

As illustrated in FIG. 3 (a), the front insert fastener element 20 is divided into a central part 20a, a left part 20b located on the left side of the central part 20a, and a right part 20c located on the right side of the central part 20a. In the example illustrated in FIG. 3 (a), the length from the left-hand end to the right-hand end of the front insert fastener 20 is divided into three equal parts, including the central part 20a, the left part 20b and the right part 20c. However, based on the above division, the area of the front insert fastener 20 is conceptually divided to describe each design of the front insert fastener 20, and therefore, the separation is not limited to three parts. For example, the front insert fastener 20 can be divided into the central part 20a, the left part 20b and the right part 20c in any respect, for example, 2: 4: 4, 4: 3: 3 or 6: 2: 2. However, it is preferred that the left-side part 20b and the right-side part 20c have the same length in the right and left directions.

[0051]

As illustrated in FIG. 3 (a), the front insert fastener element 20 is formed in a shape according to which its right and left direction is a longitudinal direction, and its up and down direction is a transverse direction. The front insert fastener element 20 includes, as its main structural members, an upper edge 201 having a curvature or a bend; a lower edge 203 facing the upper edge 201 and having curvature or bending; a left-side edge 205 connecting the left end of the upper edge 201 with the left end of the lower edge 203; and a right-side edge 206 connecting the right end of the upper edge 201 with the right end of the lower edge 203.

[0052]

In the example illustrated in FIG. 3 (a), the front insert fastener 20 has upper ends 202 in two sections on the left side 20b and the right side 20c. When drawing a straight line from the upper end 202, located on the left side 20b in the direction to the right and left of the front insert fastener element 20, the upper end 202 will be on a straight line in the right part 20c. It is preferable that the upper ends 202 in the front insert fastener 20 relate to at least the left part 20b or the right part 20c, and there may be a height difference between the left part 20b and the right part 20c of the front insert fastener 20.

[0053]

The central portion of the cutout 21 is formed on the side of the upper edge 201 of the front insert fastener 20. The upper edge 201 is rounded or curved, thereby forming the specified central portion of the cutout 21. In FIG. 3 (a), an example is illustrated in which the top edge 201 is curved. The central portion of the cutout 21 forms an inward bend towards the front insert fastener member 20, and the apex of the bend 211 is located in the central portion 20a. The term “apex of a bend” refers to the most curved portion in a formed neckline. In FIG. 3 (a) the apex of bend 211 is shown as a point, but the apex of bend 211 may be in the form of a straight line, as described below. When the apex of the bend 211 is in the form of a point, it is preferable that the apex of the bend 211 is located in the center of the upper edge 201 of the front insert fastener 20. However, the apex may deviate to the right and left from the center of the upper edge 201 by a predetermined distance, since the apex bend 211 refers to at least a portion that is separated as a central portion 20a.

[0054]

As illustrated in FIG. 3 (a), the upper edge 201 is preferably a curve connecting the tip of the bend 211 of the central cutout portion and the upper end 202 of the front insert fastener 20. In the example of the present invention illustrated in FIG. 3 (a), the upper end 202 in the front insert fastener 20 is located in the left-side part 20b and the right-side part 20c, and each upper end 202 is connected in a curve to the bend apex 211 of the central cutout portion. The curve connecting the upper end 202 and the top of the bend 211 may be a gentle S-curve, as illustrated in FIG. 3 (a), or may be a slightly arched curve.

[0055]

In the example of the present invention illustrated in FIG. 3 (a), the upper end 202 of the front insert fastener 20 does not coincide with the intersection point of the upper edge 201 and each side edge (205, 206). The angle θ ₁ between each side angle (205, 206) and the tangential line of the upper edge 201 at the point of intersection with each side edge, respectively, is an obtuse angle (θ ₁ > 90 °). The angle θ ₁ is, for example, preferably 95 ° -135 °, 100 ° -130 ° or 105 ° -110 °. As described below (for example, as illustrated in Fig. 4 (a)), it is possible to match the upper end 202 of the front insert fastener 20 and the intersection point of the upper edge 201 and each side edge (205, 206). When the upper end 202 of the front insert fastener 20 does not coincide with the intersection point of the upper edge 201 and each side edge (205, 206), as in the example illustrated in FIG. 3 (a), the upper end 202 of the upper edge 201 may be connected to the apex of the bend 211 of the central portion of the cutout 21 using a gentle S-curve, while the upper edge 201 of the front insert fastener element 20 can be made as a hollow curve as a whole. Even when the abdomen of the user is in contact with the upper edge 201 of the front insert fastener 20, it is possible to eliminate an unpleasant sensation of pressure on the abdomen of the user. The deviation difference (the distance indicated by the symbol K) between the upper end 202 of the front insert fastener element 20 and the intersection point of the upper edge 201 and each side edge (205, 206) can be set, for example, in the range from 0.5 mm to 100 mm, from 1 mm to 8 mm, from 2 mm to 6 mm or from 3 mm to 4 mm.

[0056]

As illustrated in FIG. 3 (a), an S-shaped curve connecting the upper end 202 of the upper edge 201 and the apex of the bend 211 of the central portion of the cutout 21 is shaped in accordance with which the curve extends outward to the top of the bend 211 of the central portion of the cutout 21 from the upper end 202 of the front insert fastener 20 and then bends inward. The upper edge 201 of the front insert fastener element 20 is made in the form of two S-shaped curves that are symmetrically sequential. Due to this, a Central section of the cutout 21 is formed, which forms an inward bend on the upper edge 201 of the front insert fastener element 20.

[0057]

Further, for the purpose of a more specific description, the upper edge 201 of the front insert fastener element 20 is made in the form of two gentle S-shaped curves that are symmetrically sequential. A flat curve means that the angle of the tangential line to the specified curve gradually changes, and it is preferable, for example, that the degree of change of the angle of the tangential line is from 1 ° to 20 ° or from 1 ° to 10 °.

[0058]

As illustrated in FIG. 3 (b), on the upper edge 201 of the front insert fastener 20, an S-curve connecting the upper end 202 to the tip of the bend 211 extends outward so that it does not exceed a straight line going to the right and left of the upper end 202. On the upper edge 201 of the front insert fastener 20, an S-shaped curve connecting the top of the bend 211 to the upper end 202 forms an inward bend to a portion where it exceeds a straight line going to the right and left from the top bend 211. The expressions “expanding” or “bending” used with respect to the S-curve connecting the top edge 201 to the top of the bend 211 are opposed to the straight line connecting the top edge 201 to the top of the bend 211.

[0059]

In accordance with the above description, when the upper edge 201 of the front insert fastener element 20 is made in the form of two gentle S-shaped curves that are symmetrically sequential, for example, even if the user leans forward, the abdomen of the user is adjacent to the central portion of the cutout 21. When S -shaped curve connects the right or left upper end 202 and the top of the bend 211, respectively, it is possible to eliminate the unpleasant feeling of pressure on the user's stomach, even if the user's stomach spruce is in contact with the upper edge 201 of the front insert fastener element 20.

[0060]

On the other hand, on the lower edge 203 of the front insert fastener 20, the lower end 204 is located in the central part 20a, the lower left cutout 22 is made in the left-side part 20b, and the lower right cutout 23 is made in the right-hand part 20c. The lower left cutout 22 is made by cutting the lower left corner of the front insert fastener 20, and the apex of the bend 221 of the lower left cutout 22 is located in the left-side part 20b. Similarly, the lower right cutout 23 is made by cutting the lower right corner of the front insert fastener 20, and the apex of the bend 231 of the lower right cutout is located on the right-hand side 20c of the front insertive fastener 20. In accordance with the above description, when making the lower left cutout 22 and lower right cutout 23, the lower edge 203 of the front insert fastener element 20 is bent or rounded. In FIG. 3 (a), an example is illustrated in which the lower edge 203 of the front insert fastener 20 is rounded.

[0061]

In the embodiment of the present invention illustrated in FIG. 3 (a), when drawing a straight line in the direction to the right and left of the top of the bend 221 of the lower left cutout 22, the top of the bend 231 of the lower right cutout 23 is placed mainly on a straight line. However, there may be a difference in height between the top of the bend 221 of the lower left cutout 22 and the top of the bend 231 of the lower right cutout 23.

[0062]

As illustrated in FIG. 3 (a), the lower end 204 of the front insert fastener 20 is located in the central portion 20a. The lower end 204 is preferably located in the center of the lower edge 203 of the front insert fastener 20, but it can deviate from the center by a predetermined distance in the right and left direction in the range related to the Central part 20A.

[0063]

In addition, as illustrated in FIG. 3 (a), the lower edge 203 of the front insert fastener 20 preferably includes a curve connecting the top of the bend 221 of the lower left notch 22, the lower end 204 of the front insertive fastener 20 and the top of the bend 231 of the lower right notch 23. The curve connecting the lower end 204 and the apex of the bend 221 of the lower left cutout 22 (or the apex of the bend 231 of the lower right cutout 23) may be a gentle S-shaped curve, as illustrated in FIG. 3 (a), or may be a gentle arcuate curve.

[0064]

An embodiment of the present invention illustrated in FIG. 3 (a) is an example in which the apex of the bend 221 of the lower left cutout 22 or the top of the bend 231 of the lower right cutout 23 does not coincide with the intersection point of the lower edge 203 and each side edge (205, 206). The angle θ ₂ between each lateral edge (205, 206) and the tangential line of the lower edge 203 at the point of intersection with each lateral edge is respectively an acute angle (θ ₂ <90 °). The angle θ ₂ is, for example, preferably from 45 ° to 85 °, from 50 ° to 80 °, or from 70 ° to 75 °. Furthermore, as regards the angle θ ₂ , it is extremely preferred that its sum with the angle θ ₁ is 180 ° (θ ₁ + θ ₂ = 180 °). However, the sum of the angles θ ₁ and θ ₂ can be more than 180 °. In this case, as illustrated in FIG. 3 (a), the intersection point of the lower edge 203 and each side edge (205, 206) can be connected to the lower end 204 of the front insert fastener element 20 using a gentle S-curve, while the lower edge 203 of the front insert fastener element 20 can be made in the form of a gentle curve as a whole. As a result of this, even if the upper parts of the thighs of the user are in contact with the lower edge 203 of the front insert fastener element 20, the user does not feel unpleasant pressure on the stomach.

[0065]

Further, as illustrated in FIG. 3 (a), it is preferable that the shape of the upper edge 201 is identical to the shape of the lower edge 203; in other words, it is preferable that the upper edge 201 and the lower edge 203 are formed by curves having the same curvature. In order to give the upper edge 201 and the lower edge 203 the same shape, as described above, it is preferable that the same cutting blade be used (cutting tool when cutting the upper edge 201 and the lower edge 203. The front insert fastener 20 can be qualitatively made by giving the upper edge 201 and the lower edge 203 of the same shape.

[0066]

As illustrated in FIG. 3 (a), it is preferable that the lower edge 203 of the front insert fastener element 20 is made in the form of two S-shaped curves that are symmetrically sequential, like the upper edge 201.

In this case, due to the fact that the upper edge 201 and the lower edge 203 are made in the form of gentle curves, the front insert fastener element 20 has a structure that is easily stretched to the right and left. With this design, a closer fit of the diaper to the user's body is ensured. In particular, the front of a disposable diaper with Velcro fasteners is often stretched to the right and left to ensure that the front of the diaper is snug against the wearer's stomach. In accordance with the above description, respectively, if the front insert fastener element 20 attached to the front is structurally easily stretched in the right and left directions, a more snug fit of the diaper to the user's body is ensured.

[0067]

Further, in FIG. 3 (b) shows approximate dimensions of the shape of the front insert fastener 20. In this case, a description will be made with reference to an example in which the present invention is applicable to a disposable adult diaper. However, the dimensions of the shape of the front insert fastener 20 are not limited to the dimensions indicated in the description below, and they can be accordingly changed for use, for example, with disposable diapers for children.

[0068]

As illustrated in FIG. 3 (b), the length (linear segment A) of the front insert fastener 20 in the right and left directions is preferably from 200 mm to 600 mm, in particular preferably from 280 mm to 500 mm. The length of the front insert fastener 20 in the up and down direction, i.e. the length from the upper end 202 to the lower end 204 of the front insert fastener 20 in the up and down direction (linear segment B) is preferably from 100 mm to 200 mm, in particular preferably from 140 mm to 180 mm. In this case, the length (linear segment B) of the front insert fastener 20 in the up and down direction is preferably from 20% to 60% of its length in the right and left directions (linear segment A), in particular preferably from 25% to 50% .

[0069]

As illustrated in FIG. 3 (b), the distance (linear segment C) between a straight line going to the right and left from the upper end 202 of the front insert fastener element 20 and a straight line going to the right and left from the top of the bend 211 of the central portion of the cutout 21, is preferably from 5 mm to 80 mm, from 10 mm to 60 mm or from 15 mm to 50 mm, in particular preferably from 20 mm to 40 mm. The length (linear segment D) of the left-side edge 205 or right-side edge 206 of the front insert fastener 20 is preferably from 50 mm to 200 mm, in particular preferably from 120 mm to 160 mm. Preferably, the length of the left-side edge 205 is substantially the same as the length of the right-side edge 206, but the lengths may vary. In this case, the distance (linear segment C) from the upper end 202 of the front insert fastener 20 to the top of the bend 211 of the central portion of cutout 21 is preferably 1% to 50% or 10% to 40% of the length (linear segment D) of the left-side edge 205 or the right-hand edge 206 of the front insert fastener 20, in particular preferably from 20% to 30%.

[0070]

As illustrated in FIG. 3 (b), in the central portion 20a, the distance (linear segment E) between the straight line going to the right and left from the top of the bend 211 of the central portion of cutout 21, and the straight line going to the right and left from the lower end 204 of the front insert the fastener element 20 is preferably from 50 mm to 200 mm, in particular preferably from 120 mm to 160 mm. On the left side 20b, the distance (linear segment F) between the straight line going to the right and left from the upper end 202 of the front insert fastener element 20 and the straight line going to the right and left from the top of the bend 211 of the lower left cutout 22 is preferably from 50 mm to 200 mm, in particular preferably from 120 mm to 160 mm. On the right-hand side 20c, the distance (linear segment G) between the straight line going to the right and left from the upper end 202 of the front insert fastener element 20 and the straight line going to the right and left from the top of the bend 231 of the lower right cutout 23 is preferably from 50 mm to 200 mm, in particular preferably from 120 mm to 160 mm. In this case, the linear segment E, the linear segment F and the linear segment G, illustrated in FIG. 3 (b) may be substantially the same or different. For example, the distance of the linear segment F or the linear segment G can be from 50% to 90% of the distance of the linear segment E, or can be from 60% to 80%. In addition, the linear segment E, the linear segment F, and the linear segment G may have a substantially similar length (linear segment D) to the left-side edge 205 or right-side edge 206 of the front insert fastener 20, or to have a different length.

[0071]

In the central portion 20a, the apex of the bend 211 of the central portion of the cutout 21 may deviate to the right and left from the center of the upper edge 201 in the front insert fastener 20. The distance (line segment H) between the straight line going up and down from the apex of bend 211 the central portion of the cutout 21 and the left-side edge 205, respectively, may differ from the distance (linear segment I) between the straight line going up and down from the top of the bend 211 of the central portion of the cutout 21 and the right-hand side edge 20. The line segment H may, for example, have a distance of 70% -90% of the line segment I. Similarly, in the central part 20a, the lower end 204 of the front insert fastener 20 can deviate to the right and left from the center of the lower edge 203 of the front insert fastener 20.

[0072]

As illustrated in FIG. 3 (b), the distance (linear segment J) between a straight line going to the right and left from the lower end 204 of the front insert fastener 20 and a straight line going to the right and left from the top of the bend 221 of the lower left cutout 22 ( or the top of the bend 231 of the lower right cutout 23), is preferably from 5 mm to 80 mm, from 10 mm to 60 mm, or from 15 mm to 50 mm, in particular, preferably from 20 mm to 40 mm In this case, the distance (linear segment J) in the up and down direction from the lower end 204 of the front insert fastener 20 to the top of the bend 221 of the lower left cutout 22 (or the top of the bend 231 of the lower right cutout 23) is preferably 1% -50%, or 10% -40% of the length (linear segment D) of the left-side edge 205 or the right-side edge 206 of the front insert fastener 20, in particular preferably 20% -30%.

[0073]

As illustrated in FIG. 3 (b), it is preferred that the distances of the linear segment C and the linear segment J be substantially the same, but they may be different. In short, the linear segment C is the bending width of the central portion of the cutout 21, and the linear segment J is the bending width of the lower left cutout 22 or the lower right cutout 23. For example, the bending width of the central portion of the cutout 21 may be greater than the bending width of the lower left cutout 22 (or lower right cutout 23).

[0074]

In addition, in FIG. 3 (b) the upper end 202 of the front insert fastener 20 does not coincide with the intersection point of the upper edge 201 and each side edge (205, 206). The distance (the linear segment K) in the right and left direction from the upper end 202 of the front insert fastener element 20 to the intersection point is, for example, preferably from 5 mm to 50 mm, in particular preferably from 20 mm to 30 mm. In FIG. 3 (b) either the apex of the bend 221 of the lower left cutout 22, or the apex of the bend 231 of the lower right cutout 23 does not coincide with the intersection point of the lower edge 203 and each side edge (205, 206). The distance (L) in the direction to the right and left of the top of the bend 221 of the lower left cutout 22 or the top of the bend 231 of the lower right cutout 23 to the intersection point is, for example, preferably from 5 mm to 50 mm, in particular preferably from 20 mm to 30 mm. In accordance with the above description, for example, when a structure is made in which the upper end 202 of the front insert fastener 20 does not coincide with the intersection point of the upper edge 201 and each side edge (205, 206), the angle of the front insert fastener 20 can be made at 90 ° or more, a right angle or an obtuse angle and, therefore, the user does not feel discomfort, even when his skin is in contact with the diaper.

[0075]

As illustrated in FIG. 3 (b), on the side of the upper edge 201 of the front insert fastener 20, the distance (line segment M) between the straight line going up and down from the top of the bend 211 of the central portion of cutout 21 to the straight line going up and downward from the upper end 202 of the front insert fastener 20 is preferably from 50 mm to 250 mm or from 100 mm to 200 mm, in particular preferably from 130 mm to 170 mm. As also illustrated in FIG. 3 (b), on the side of the lower edge 203 of the front insert fastener 20, the distance (line segment N) between the straight line going up and down from the lower end 204 of the front insert fastener 20 and the straight line going up and downward from the apex of the bend 221 of the lower left cutout 22 (or the apex of the bend 231 of the lower right cutout 23) is preferably from 50 mm to 250 mm or from 100 mm to 200 mm, in particular preferably from 130 mm to 170 mm. The distance between the linear segment M and the linear segment N may be the same or different.

[0076]

2-2-2. Other embodiments of the front insert fastener

As shown in FIG. 4 - FIG. 7, other embodiments of the front insert fastener 20 are described below.

In the following description of exemplary embodiments of the present invention, partially matching details in the above examples and the above examples are omitted.

[0077]

In the embodiment of the present invention illustrated in FIG. 4 (a), the upper end 202 of the front insert fastener 20 coincides with the intersection point of the upper edge 201 and each side edge (205, 206). The tip of the bend 221 of the lower left cutout 22 coincides with the intersection point of the lower edge 203 and the left-hand edge 205, and the tip of the bend 231 of the lower right cutout 23 coincides with the intersection of the lower edge 203 and the right-hand edge 206. In addition, the upper end 202 of the front insert fastener 20 and the apex of bend 211 of the central portion of cutout 21 is connected to each other by a gentle S-shaped curve. Similarly, the lower end 204 of the front insert fastener 20 and the tip of the bend 221 of the lower left notch 22 or the lower end 204 of the front insert fastener 20 and the tip of the bend 231 of the lower right notch 23 are connected to each other by a gentle S-shaped curve. In the embodiment of the present invention illustrated in FIG. 4 (a), the upper edge 201 and the lower edge 203 of the front insert fastener 20 are curved in the shape of the abdomen and both legs of the user, as a result of which the user preferably does not experience an unpleasant discomfort.

[0078]

In the embodiment of the present invention illustrated in FIG. 4 (b), the upper end 202 of the front insert fastener 20 coincides with the intersection point of the upper edge 201 and each side edge (205, 206). The top of the bend 221 of the lower left cutout 22 coincides with the intersection point of the lower edge 203 and the left-side edge 205, and the top of the bend 231 of the lower right cutout 23 coincides with the intersection of the lower edge 203 and the right-side edge 206. The upper edge 201 of the front insert fastener 20 is thus made so that it forms a gentle arcuate curve that passes through the upper end 202 of the front insert fastener element 20 and the tip of the bend 211 of the central portion of the cutout 21. The lower edge 203 of the front The avatar fastener 20 is formed so as to form a gentle arcuate curve that passes through the apex of the bend 221 of the lower left cutout 22, the lower end 204 of the front insertion fastener element 20 and through the apex of the bend 231 of the lower right cutout 23. In an embodiment of the present invention, illustrated in FIG. 4 (b), the upper edge 201 and the lower edge 203 have simple shapes, and thus errors in cutting the front insert fastener element 20 can be avoided when cutting, and as a result, efficient mass production of this element is ensured.

[0079]

In the embodiment of the present invention illustrated in FIG. 4 (c), the upper end 202 of the upper edge 201 of the front insertion fastener 20 does not coincide with the intersection point of the upper edge 201 and each side edge (205, 206), and the angle of the front insertion fastener 20 is rounded in shape. In the lower edge 203 of the front insert fastener 20, the lower left corner of the front insert fastener 20 is rounded in shape in the lower left cutout 22, and similarly, the lower right corner of the front insert fastener is 20 rounded in shape in the lower right cutout 23. In accordance with the above description, when the four corners of the front insert fastener 20 are rounded in shape, the risk of damage to the skin of the user can be minimized, d Also, if the user's skin in contact with him.

[0080]

In the embodiment of the present invention illustrated in FIG. 4 (d), the upper end 202 of the front insert fastener 20, the tip of the bend 211 of the central portion of the cutout 21, the tip of the bend 221 of the lower left cutout 22, the lower end 204 of the front insert of the fastener element 20 and the tip of the bend 231 of the lower right cut 23 straight lines in the right and left directions, with the front insert fastener element having a shape in which the upper edge 201 and the lower edge 203 of the front insert fastener element are bent.

[0081]

In FIG. 5 (a) to 5 (d), an example is illustrated in which, in the forms illustrated in FIG. 4 (a) -4 (d), the central portion of the cutout 21 is formed on the side of the upper edge 201 of the front insertion fastener 20, and the lower left cutout 22 and the lower right cutout 23 are not formed on the side of the lower edge 203 of the front insertion fastener 20. FIG. . 5 (a) -5 (d) respectively correspond to FIG. 4 (a) -4 (d). As illustrated in FIG. 5, only the central portion of the cutout 21 can be formed on the side of the upper edge 201 of the front insert fastener 20.

[0082]

On the other hand, in FIG. 6 (a) -6 (d) illustrates an example in which, in the forms illustrated in FIG. 4 (a) -4 (d), the central portion of the cutout 21 is not formed on the side of the upper edge 201 of the front insertion fastener 20, and the lower left cutout 22 and the lower right cutout 23 are made on the side of the lower edge 203 of the front insertion fastener 20. FIG. . 6 (a) -6 (d) respectively correspond to FIG. 4 (a) -4 (d). As illustrated in FIG. 6, only the lower left cutout 22 and the lower right cutout 23 can be made on the side of the lower edge 203 of the front insert fastener 20.

[0083]

In FIG. 7 (a) -7 (c) further illustrate other examples of the front insert fastener 20. As illustrated in FIG. 7 (a), in the front insert fastener 20, the shape of the upper edge 201 may differ from the shape of the lower edge 203. For example, as illustrated in FIG. 7 (a), the upper edge 201 may have a gentle arcuate shape that forms a bend towards the inside of the front insert fastener element 20, and the lower edge 203 may be made in the form of an S-curve connecting the top of the bend 221 of the lower left cutout 22 with the lower the end 204 of the front insert fastener 20, and in the form of an S-curve connecting the top of the bend 231 of the lower right cutout 23 with the lower end 204 of the front insert fastener 20. In the example of the present invention illustrated in Phi g. 7 (a), the upper edge 201 is curved in the shape of the abdomen, and the lower edge 203 is curved in the shape of both legs, and thus the tight fit of the disposable diaper is increased.

[0084]

In the embodiment of the present invention illustrated in FIG. 7 (b), the front insert fastener element 20 is made in the form in which it is divided into the central part 20a, the left part 20b and the right part 20c, i.e., the central part 20a is the first element, the left part 20b is the second element and the right side 20c is the third element. The first element 20a is further shifted downward relative to the second element 20b and the third element 20c and forms the central portion of the cutout 21, the lower left cutout 22 and the lower right cutout 23. In accordance with the above description, the front insert fastener element 20 can be divided into three parts thus, the central part of the cutout 21, the lower left cutout 22 and the lower right cutout 23 can be created.

[0085]

In the embodiment of the present invention illustrated in FIG. 7 (c), the upper end 202 of the front insert fastener 20 is connected to the top of the bend 211 of the central portion of the cutout 21 in a straight line. Either the lower end 204 of the front insert fastener element 20 and the top of the bend 221 of the lower left cutout 22, or the lower end 204 of the front insert fastener element 20 and the top of the bend 231 of the lower right cutout 23 are connected to each other by a straight line. In accordance with the above description, the upper edge 201 and the lower edge 203 of the front insert fastener element 20 may have a shape in which a straight line is curved.

[0086]

In FIG. 8 illustrates a front insert fastener 20 in accordance with a further embodiment of the present invention. As illustrated in FIG. 8, the central portion of the cutout 21 is formed on the side of the upper edge 201 of the front insert fastener 20, and the apex of the bend 211 is located in the central portion 20a. The upper end 202 of the front insert fastener 20 is located at the intersection of the upper edge 201 and each side edge (205, 206). The upper end 202 and the apex of the bend 211 of said front insert fastener element 20 are connected to each other by a gentle S-shaped or arched curve. In this case, in the embodiment of the present invention illustrated in FIG. 8, the angle between each lateral edge (205, 206) and the tangential line of the upper edge 201 at the intersection with each lateral edge is an acute angle (θ ₁ <90 °). The angle θ ₁ illustrated in FIG. 8 is, for example, preferably from 45 ° to 85 °, from 50 ° to 80 °, or from 70 ° to 75 °.

[0087]

On the other hand, on the side of the lower edge 203 of the front insert fastener 20, the lower end 204 is located in the central part 20a, the lower left cutout 22 is made in the left part 20b, and the lower right cutout 23 is made in the right part 20c. The top of the bend 221 of the lower left cutout 22 or the top of the bend 231 of the lower right cutout 23 is located at the intersection of the lower edge 203 and each side edge (205, 206). The lower end 204 of said front insert fastener 20 is connected to the apex of bend 221 or 231 of a gentle S-shaped or arcuate curve. In this case, in the embodiment of the present invention illustrated in FIG. 8, the angle θ ₂ between each lateral edge (205, 206) and the tangential line of the lower edge 203 at the point of intersection with each lateral edge is an obtuse angle (θ ₂ > 90 °). The angle θ ₂ illustrated in FIG. 8 is, for example, preferably 95 ° to 135 °, 100 ° to 130 °, or 105 ° to 110 °. Furthermore, as regards the angle θ ₂ , it is extremely preferred that its sum with the angle θ ₁ is 180 ° (θ ₁ + θ ₂ = 180 °). However, the sum of the angles θ ₁ and θ ₂ can be more than 180 °.

[0088]

In the front insert fastener 20 of the embodiment of the invention illustrated in FIG. 8, when the straight line is drawn in the right and left directions (in the longitudinal direction of the front insert fastener), the straight line does not intersect the upper edge 201 at three or more points. Similarly, in the front insert fastener element 20 of the embodiment of the invention illustrated in FIG. 8, when a straight line is drawn in a right and left direction, said straight line does not intersect the lower edge 203 at three or more points. Preferably, respectively, the tangential line at any point on the upper edge 201 and the lower edge 203 is not parallel in the right and left directions. In accordance with the above description, when the upper edge 201 and the lower edge 203 are designed so that the part parallel to the right and left direction is not made, when manufacturing the front insert fastener element 20, errors in cutting sheet material can be avoided.

As described below, in the manufacture of the front insert fastener 20, a long continuous strip of sheet material for manufacturing the front insert fastener 20 is cut into portions corresponding to the upper edge 201 and the lower edge 203, and is divided into separate front insert fastener elements 20. The upper edge 201 and the lower edge 203, respectively, correspond to the lines of the cutting plane of the sheet material. In this case, if there is a part parallel to the right and left direction along the lines of the sheet cutting plane (upper edge 201 and lower edge 203), the linear pressure is weakened in the parallel part when cutting the sheet material. For this reason, if the points at which the upper edge 201 intersects each side edge (205, 206) are parallel to the right or left direction, an error can easily occur when cutting sheet material in parallel parts, for example, as illustrated in the embodiment of FIG. . 4 (d). At the same time, in the front insert fastener element 20 of the embodiment of the invention illustrated in FIG. 8, parts parallel to the right and left direction are not made on the upper edge 201 and the lower edge 203. Thus, in accordance with the exemplary embodiment of the invention illustrated in FIG. 8, errors when performing cutting of the sheet material do not occur even if they are cut in positions corresponding to the upper edge 201 and the lower edge 203, as a result of which the front insert fastener 20 is effectively manufactured.

[0089]

2-3. Moisture-absorbing cushioning material

The moisture-absorbing cushioning material 31 is an element for absorbing and retaining the urine of the user. The moisture-absorbing cushioning material 31 is made of an absorbent material for absorbing and retaining urine or body fluid of the user. As absorbent materials, for example, cellulose wool, super absorbent polymers, hydrophilic sheet material and the like can be used. An example of cellulose wool may include wood pulp or non-wood pulp that has been fluffed to a flocculent state. Examples of the super absorbent polymer may include sodium polyacrylate. As the hydrophilic sheet material, for example, paper waste, absorbent paper or non-woven material that has been subjected to hydrophilic processing can be used.

[0090]

A moisture-absorbing cushioning material 31 is arranged between the upper sheet layer 32 and the lower sheet layer 33, and sealed between the upper sheet layer 32 and the lower sheet layer 33 by welding the edges of two sheet layers. The shape of the moisture-absorbing cushioning material 31 is not limited to the illustrated shape and may be rectangular, pumpkin-shaped or T-shaped. In the diaper 100 with a velcro closure illustrated in FIG. 1 or FIG. 2, a moisture-absorbing cushioning material in the form of an hourglass is used as the moisture-absorbing cushioning material 31.

[0091]

2-4. Top sheet layer

The upper sheet layer 32 is a liquid-permeable sheet layer that is positioned so as to cover the surface of the moisture-absorbing cushioning material 31 in contact with the skin. The upper sheet layer 32 passes liquid, such as urine, into the moisture-absorbing cushioning material 31 located on the lower side.

[0092]

As the liquid-permeable material forming the upper sheet layer 32, for example, woven materials, non-woven materials and porous films can be used. In particular, it is preferable to use a non-woven material made of a thermoplastic polymer, such as polypropylene, polyethylene, polyester or nylon, and subjected to hydrophilic processing.

[0093]

The upper sheet layer 32 can be made in the form of a single sheet material, however, it can also be made in the form of several sheet materials. For example, it may have a structure in which a sheet material located on the surface of a moisture-absorbing cushioning material is combined with sheet materials located on the side flaps.

[0094]

2-5. Bottom sheet

The lower sheet layer 33 is a liquid impervious sheet layer that covers the moisture-absorbing cushioning material 31 from the surface side not in contact with the skin. The lower sheet layer 33 prevents the flow of liquid held in the moisture-absorbing cushioning material 31 from the diaper to the outside.

[0095]

As the liquid impervious material forming the lower sheet layer 33, for example, liquid impermeable films made of a polymer such as polyethylene can be used. In particular, it is preferable to use a microporous plastic film. A number of micropores with a diameter of about 0.1 μm are made in said microporous polyethylene film, and the film is preferred because it prevents the formation of steam from moisture inside the diaper, because the film has moisture permeability, and at the same time it is impervious to liquid.

[0096]

In order to reinforce the lower sheet layer 33 and improve the texture, a cover sheet 36 may be welded to the outer surface of the lower sheet layer 33. For example, non-woven materials or non-woven fabric obtained by wet canvas can be used as the material forming the cover sheet 36. made from a thermoplastic polymer such as polyethylene, polypropylene or polyester.

[0097]

2-6. Volumetric assemblies

Volumetric assemblies 35 are an element that functions as an airtight barrier to prevent the passage of urine or similar fluids secreted by the carrier out of the diaper. Volumetric assemblies 35 may be made of side sheet layers 34, different from the upper sheet layer 32 and the lower sheet layer 33. For example, one end of the side sheet layer 34 is fixed to the surface of the upper sheet layer 32, and the elastic material 41 or volume assemblies are arranged in a stretched state at the other end of the side sheet layer. When assemblies are made in accordance with the above description, the volume assemblies 35 are raised due to the compressive force of the elastic material 41 for the volume assemblies, thereby effectively preventing leakage on the sides, i.e. leakage of fluid, such as urine, from the openings of the diaper to the legs.

[0098]

Preferably, the volumetric assemblies 35 are made at least in the crotch section 3 to prevent leakage from the crotch section 3, however, the assemblies can be located up to the rear part 1 or the front part 2. In addition, at least one pair of volumetric assemblies 35 may be performed on the right and left sides of the crotch section, and, for example, two pairs or more assemblies can be performed on the right and left sides of the crotch section.

[0099]

2-7. The formation of various assemblies

In a disposable Velcro diaper in accordance with the present invention, it is preferable to form bundles 37 around the leg or bundles 38 around the hips in addition to the bulky bundles 35 in accordance with the above description.

[0100]

The assemblies 37 located around the legs are an element for preventing a situation in which a liquid, such as urine, flows through the leg openings of the disposable diaper. Assemblies 37 that fit the leg are made by arranging the elastic material 42 around the leg along an open portion placed around the leg in a stretched state, and by using the compressive force of said elastic material 42 that surround the leg. These assemblies eliminate the formation of gaps around the legs and can effectively prevent the flow of urine through the openings for the legs. In the formation of assemblies 37 located around the leg, the crotch section 3 is deformed, taking a generally cup-like shape, due to the compression of the elastic material 42, fitting the legs on both sides of the moisture-absorbing cushioning material 31 when changing the diaper. As a result, urine or body fluids are collected in a cup-shaped section of the perineum 3, and thus the diaper can be easily changed without spilling urine.

[0101]

For example, in FIG. 2 illustrates an embodiment of the present invention, according to which three linear elastic materials 42 that encircle the legs are arranged in the longitudinal direction (up and down direction) of the diaper in the portion of the disposable leg diaper. The specified elastic material 42, fitting legs, made, for example, of rubber threads or of flat rubber tape. However, it is not necessary to arrange the elastic material 42 around the legs in a straight line, and, for example, it can be located along the curve of the leg opening for the diaper that surrounds the legs in the form of a curve.

[0102]

Hip-fitting assemblies 38 are an element that prevents urine from flowing out of the leg openings of the disposable diaper located around the hips and at the same time improves the fit of the disposable diaper to prevent the diaper from slipping. Assemblies 38 that fit the hips are made by arranging the elastic material 43 that fits in the stretched state of the hips along the leg openings and by using the compressive force of said elastic material 43 that fits the hips. When using such assemblies, the leg openings of the disposable diaper, tight-fitting buds, fit snugly against the abdomen and to the lower back of the wearer, as a result of which urine leakage is prevented and a tighter fit is ensured.

[0103]

For example, in the embodiment of the present invention illustrated in FIG. 2, the diaper is provided with four linear elastic strips of material 43 that surround the hips and are located in the transverse direction (left and right) of the disposable diaper in its portion that surrounds the hips. The elastic material 43, which surrounds the hips, is made, for example, of rubber threads or flat rubber bands, as well as the elastic material 42, which surrounds the legs.

[0104]

As the above-described elastic material 42, tight-fitting legs or elastic material 43, tight-fitting hips, can be used, for example, rubber, elastic nets, elastic films, elastic foam, (polyurethane foams and similar materials) made of an elastic material such as natural rubber or synthetic rubber (urethane rubber and the like). These elastic materials are attached to other structural elements of the diaper using adhesives or other means. As fixing methods, for example, adhesive methods can be used, in which hot-melt adhesive or other adhesives having a high degree of fluidity are used, or methods for melting adhesive compositions by heating or using ultrasonic waves, for example, a heat sealing method.

3. A method of manufacturing a disposable diaper

[0105]

The following is a description of the entire process using the manufacturing method of a diaper with Velcro fastener in accordance with the present invention.

At the initial stage of the process, the moisture-absorbing cushioning material 31 is laid on the upper surface of a long tape of the lower sheet layer, which is the material of the lower sheet layer 33. Then, the material of the upper sheet layer, which is the upper sheet layer 32, is laid on the upper surface of the lower sheet layer to create blanks in in the form of a continuous tape of disposable diapers. At this stage, a material of the long side sheet layer representing the side sheet layer 34 can be welded to the material of the upper sheet layer, and the elastic material 41 for volume assemblies can be placed on the side sheet layer to create volume assemblies 35.

[0106]

In a pre-made diaper made in accordance with the above process, sections (R-cutting) for leg openings that fit the legs are arcuately cut in the blanks of the disposable diaper. Further, tape fixing tabs 10 and a front insert fastener element 20, made on separate production lines, are respectively fastened to the rear part 1 and the front part 2. Finally, the strip of blanks of the disposable diaper is cut into separate blanks, resulting in a disposable diaper 100 with a Velcro fastener.

[0107]

The following is a description of a manufacturing method of the front insert fastener 20 with reference to FIG. 9.

In particular, an example is described below in which the upper edge 201 and the lower edge 203 of the front insert fastener 20 have the same radius of curvature.

[0108]

In FIG. 9 schematically illustrates a manufacturing process of the front insert fastener 20. As illustrated in FIG. 9, a roll 52 of the front insert fastener with a long ribbon of material 51 of the front insert fastener, which is the material for manufacturing the front insert fastener 20, is installed at the beginning of the production line. The material 51 of the front insert fastener is unwound from the roll 52 of the front insert fastener and transported in the direction indicated by arrow A to the end of the production line. A knife roll 53 for cutting an element is located at the opposite end of the processing line from a roll 52 of the front insert fastener. The knife roller 53 has an axis of rotation and rotates in the direction indicated by arrow B. The knife roller 53 for cutting an element cuts the material 51 of the front insert fastener, transported along the production line in a direction perpendicular to the direction of flow of the material, to form separate front insert fastener elements 20.

[0109]

In this case, the cutting blade 54 of the knife roller 53 for cutting the element is bent so that it matches the shape of the upper edge 201 and the lower edge 203 of the front insert fastener 20. This blade allows you to cut the upper edge 201 and the lower edge 203 of the front insert fastener 20 one knife roller 53 for cutting an element. In accordance with the above description, with the identical shape of the upper edge 201 and the lower edge 203, the front insert fastener 20 is manufactured efficiently using one knife roller 53 to cut the element, and therefore there is the possibility of reducing production costs and at the same time speeding up the front manufacturing process insert fastener 20.

[0110]

Despite the absence of drawings illustrating the knife roller, the knife roller 53 for cutting the elements may be a roller rotating and passing underneath the material 51 of the front insert fastener element located between the roller and the support roller with a flat work surface for cutting material 51 of the front insert fastener element .

[0111]

In the example of the present invention illustrated in FIG. 9, a front insert fastener member 20 is shown in which both the upper edge 201 and the lower edge 203 are in the form of a curved line.

On the other hand, as illustrated in the embodiment of the present invention in FIG. 4 (d), when the upper edge 201 or the lower edge 203 of the front insert fastener 20 is in a straight line and there are parts horizontally left and right on the part of the upper edge 201 or lower edge 203, the linear pressure of the horizontal parts differs from linear pressure in other parts when performing cutting, and thus there is a risk of error when cutting the front insert fastener 20.

Moreover, in the embodiment of the present invention, in which there are no horizontal parts in the right and left directions on the upper edge 201 and the lower edge 203 of the front insert fastener, as in the example of the present invention illustrated in FIG. 8, errors in cutting the front insert fastener 20 are eliminated. In particular, in the embodiment of the present invention illustrated in FIG. 8, there are no horizontal parts in the right and left directions at the intersection of the upper edge 201 and each side edge (205, 206), and at the intersection of the lower edge 203 and each side edge (205, 206).

Thus, problems encountered in cutting the front insert fastener 20 into individual insert fastener elements can be solved by making the curved upper edge 201 and lower edge 203 of the front insert fastener 20.

Industrial applicability

[0112]

The present invention may be applicable to disposable diapers for children or adults, for example for the elderly or disabled people in need of care. The present invention, accordingly, can be preferably used in the field of childcare or patient care.

List of item numbers

[0113]

1 back

10 Tape locking tab

11 Fasteners

2 front

20 Front insert fastener

20a Central part

20b Left side

20s right side

201 upper edge

202 upper end

203 Bottom edge

204 lower end

205 left edge

206 Right edge

21 Central section of the cut

211 The top of the bend of the Central section of the cut

22 Bottom Left Cutout

221 Apex of bend of the lower left notch

23 Lower right neckline

231 Apex of bend of the lower right notch

3 crotch section

31 Moisture-absorbing cushioning material

32 top sheet

33 bottom sheet

34 Side sheet layer

35 voluminous assemblies

36 Cover sheet

37 Tight leg assemblies

38 Bodycon hips

41 Stretch material for voluminous assemblies

42 leg-fitting elastic material

43 Tight-fitting elastic material

51 Material of front insert fastener

52 Roll of front insert fastener

53 knife roller

54 cutting blade

100 Disposable diaper

Claims (3)

        1. Disposable diaper with Velcro fasteners, including the rear part (1), the front part (2) and the crotch section (3) located between the rear part (1) and the front part (2), a tape fixing tab (10) attached to the rear part (1) so that it departs from the right and left edges of the rear part (1), the front insert fastener element (20), designed to secure the tape fixing tab (10) on the front part (2), characterized in that front insert fastener (20) times It is divided into the central part (20a), the left part (20b) located on the left side of the central part, and the right part (20 s) located on the right side of the central part, the central section of the cutout (21), forming a bend in the direction inward of the front insert fastener element, made on the side of the upper edge (201) of the front insert fastener element, the bend vertex (211) of the central portion of the cutout (21) is located in the central part (20a), the upper end (202) of the front insert fastener element is located in the left of the part (20b) and the right-side part (20c), the upper edge (201) of the front insert fastener includes an S-curve connecting the top of the bend (211) of the central section of the cut-out (21) and the upper end (202) of the front insert fastener, The S-curve has a shape according to which it extends outward from the upper end 202 towards the apex of the bend (211) and then forms an inward bend, the lower left cut-out (22), made by cutting the lower left corner of the front insert fastener (20 ), and the lower right cutout (23), made by cutting the lower right corner of the front insertion fastener (20), made on the side of the lower edge (203) of the front insertion fastener, the bend vertex (221) of the lower left cutout is located in the left-side part (20b), the bend apex (231) of the lower right cutout is located on the right-hand side (20c), the lower edge (203) of the front insert fastener includes a curve connecting the bend top (221) of the lower left cut-out, the lower end (204) of the front insert the stitch element and the bend vertex (231) of the lower right cutout, and the curve forming the lower edge (203) of the front insert fastener element has a shape similar to that of the curve forming the upper edge (201).           2. A disposable diaper according to claim 1, characterized in that the front insert fastener (20) has a left-hand edge (205) connecting one end of the upper edge (201) and one end of the lower edge (203), and the right-hand edge (206) connecting the other end of the upper edge (201) and the other end of the lower edge (203), the upper end (202) of the front insert fastener (20) does not coincide with the intersection of the upper edge (201) with each of the side edges (205, 206) , and the angle between each of the lateral edges (205, 206) and the tangential line of the upper edge (201) at the point of intersection with each of the lateral edges (205, 206) is an obtuse angle.        3. A disposable diaper according to claim 1, characterized in that the front insert fastener (20) has a left-hand edge (205) connecting one end of the upper edge (201) and one end of the lower edge (203), and the right-hand edge (206) connecting the other end of the upper edge (201) and the other end of the lower edge (203), the upper end (202) of the front insert fastener element (20) coincides with the intersection point of the upper edge (201) with each of the side edges (205, 206), and the angle between each of the side edges (205, 206) and the tangential line of the upper edge (201) in t the intersection point with each of the side edges (205, 206) is an acute angle.

Images